#1: which of the following is the abbreviation for a unit of energy? a. k / b. °c/ c. w / d. #2: a 200 g block of a substance requires 1.84 kj of heat to raise its temperature from 25°c to 45°c. use the table attached to identify the substance. a. iron/ b. aluminum/ c. gold/ d. #3: in a calorimeter, the temperature of 100 g of water decreased by 10°c when 10 g of ice melted. how much heat was absorbed by the ice? a. 418 kj / b. 100 kj / c. 10 j / d. 4.18 kj #4: the amount of heat needed to raise the temperature of 50 g of a substance by 15°c is 1.83 kj. what is the specific heat of the substance? a. 2.44 j/g-°c / b. 2.22 j/g-°c / c. 2.13 j/g-°c / d. 2.05 j/g-°c #5: in a calorimeter, 3.34 kj of heat was absorbed when 10 g of ice melted. what is the enthalpy of fusion of the ice? a. 6.68 j/g / b. 334 j/g / c. 6.68 kj/g/ d. 334 kj/g
Answers: 2
Chemistry, 21.06.2019 21:40
During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.
Answers: 2
Chemistry, 22.06.2019 19:10
Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m
Answers: 1
Chemistry, 22.06.2019 23:30
The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams
Answers: 2
#1: which of the following is the abbreviation for a unit of energy? a. k / b. °c/ c. w / d. #2:...
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